<template>
  <div class="swiper-container skuImg-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="(skuImg,index) in skuInfo.skuImageList" :key="skuImg.id">
        <img :src="skuImg.imgUrl" @click="handlerImgUrl(index,skuImg.imgUrl)" :class="{active:currentIndex===index}" alt='skuImg.imgName'>
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
  import {mapGetters,mapMutations} from 'vuex'
  import Swiper from 'swiper'
  export default {
    name: "ImageList",
    data(){
      return{
        currentIndex:0
      }
    },
    props:['getIndex'],//函数
    computed:{
      ...mapGetters('detail',['skuInfo'])
    },
    watch:{
      skuInfo(){
        this.$nextTick(()=>{
          new Swiper('.skuImg-container',{
            slidesPerView:'auto',//显示几张图片
            spaceBetween:100,//图片之间的距离
            //前进后退按钮
            navigation:{
              nextE1:'.swiper-button-next',
              prevE1:'.swiper-button-prev',
            }
          })
        })
      }
    },
    methods:{
      ...mapMutations('detail',['UPDATE_IMG_DEFAULT_URL']),
      //小图高亮
      handlerImgUrl(index,imgUrl){
        this.currentIndex=index
        //如果没有涉及到异步操作可以直接操作mutations中的方法
        this.UPDATE_IMG_DEFAULT_URL(imgUrl)
      }
    }
  }
</script>

<style lang="less" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        &:hover {
          border: 2px solid #f60;
          padding: 1px;
        }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>